<template>
    <div>
        <el-form :rules="rules"
        v-loading="loading"
        element-loading-text="正在登录..."
        element-loading-spinner="el-icon-loading"
        element-loading-background="rgba(0,0,0,0.8)" 
        ref="loginForm" :model="loginForm" class="loginContainer">
            <h3 class="loginTitle">系统登录</h3>
            <el-form-item prop="username">
                <el-input type="text" auto-complete="false" v-model="loginForm.username" placeholder="请输入用户名"></el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input type="password" auto-complete="false" v-model="loginForm.password" placeholder="请输入密码"></el-input>
            </el-form-item>
            <el-form-item prop="code">
                <el-input type="text" auto-complete="false" v-model="loginForm.code" placeholder="点击图片更换验证码" style="width:250px;margin-right: 5px"></el-input>
                <img :src="captchaUrl" @click="updateCaptcha">
            </el-form-item>
            <el-checkbox v-model="checked" class="loginRemember">记住我</el-checkbox>
            <el-button type="primary" style="width: 100%" @click="submitLogin">登录</el-button>
        </el-form>
    </div>
</template>

<script>
export default {
    name: "Login",
    data(){
        return{
            captchaUrl: '/captcha?time='+new Date(),
            loginForm:{
                username: 'admin',
                password: 'N0acc/3551',
                code: ''
            },
            loading:false,
            checked:true,
            rules:{
                username:[{required:true,message:'请输入用户名',trigger:'blur'}],
                password:[{required:true,message:'请输入密码',trigger:'blur'}],
                code:[{required:true,message:'请输入验证码',trigger:'blur'}]
            }
        }
    },
    methods:{
        updateCaptcha(){
            this.captchaUrl = '/captcha?time='+new Date();
        },
        submitLogin(){
            this.$refs.loginForm.validate((valid) => {
                if(valid) {
                    this.loading=true;
                    this.postRequest('/login',this.loginForm).then(resp=>{
                        if(resp){
                            this.loading=false;
                            //存储用户token
                            const tokerStr = resp.obj.tokenHead + resp.obj.token;
                            window.sessionStorage.setItem('tokenStr',tokerStr);
                            //跳转首页
                            // this.$router.replace('/home');
                            //页面跳转
                            let path = this.$route.query.redirect;
                            this.$router.replace((path=='/' || path==undefined)?'/home':path)
                        }
                    });
                } else{
                    this.$message.error('请输入所有字段');
                    return false;
                }
            });
        }
    }
}
</script>

<style>
.loginContainer{
    border-radius: 15px;
    background-clip: padding-box;
    margin: 180px auto;
    width: 350px;
    padding: 15px 35px 15px 35px;
    background: #fff;
    border: 1px solid #eaeaea;
    box-shadow: 0 0 25px #cac6c6;
}
.loginTitle{
    margin: 0px auto 40px auto;
    text-align: center;
}
.loginRemember{
    text-align: left;
    margin: 0px 0px 15px 0px;
}
.el-form-item__content{
    display: flex;
    align-items: center;
}
</style>